diff --git a/schema/cryptography-defs.schema.json b/schema/cryptography-defs.schema.json
index 1f06fdff..1a873a01 100644
--- a/schema/cryptography-defs.schema.json
+++ b/schema/cryptography-defs.schema.json
@@ -270,6 +270,7 @@
         "FFDH",
         "Fortuna",
         "GOST",
+        "HPKE",
         "HC",
         "HKDF",
         "HMAC",